Don't think this was posted, apologies if it was.

It would be nice to have an option to link together the sliders for body/rims color, so that moving one slider affects both spokes and outside of the rim (or multiple body panels)
it would make setting things to the same shade a lot easier

As the color selection works as a RGB combination with 256 (i assume) steps each, it would be nice to be able to right click it and input an exact value, like you can with other setup sliders.

Quote from johneysvk :

It would be nice to have an option to link together the sliders for body/rims color, so that moving one slider affects both spokes and outside of the rim (or multiple body panels)
it would make setting things to the same shade a lot easier.

You can use Ctrl + right click to copy a slider value, and Shift + right click to paste it somewhere else. It works with colours too

Thanks, I didn't know of that!
still seems a bit fiddly though, as long as these thing aren't too much hassle to code it would be a nice addition IMO, it's those little things...